Improvement in sawing-machines



W. S. GERRISH.

v Sawing-Machines- N0.T50,756, I Patented May12, 1874.

WITNESSES:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

\NTNFIELD S. GERRISH, OF HERSEY, MICHIGAN.

IMPROVEMENT IN SAWlNG-MACHINES.

Specification forming part of Letters Patent No. 150,756, dated May 12,1874; application filed April 11', 1874.

To all whom it may concern Be it known that I,WINFIELD S. GERRISH, ofHersey, in the county of Osceola and State of Michigan, have invented anew and Improved (Jrosscut Sawing-Machine, of which the following is aspecification:

In theaccompanying drawing, Figure 1 represents a side elevation of myimproved crosscut sawing-machine; Fig. 2, a top View; and Fig. 3, avertical transverse section of the same on the line 0 c, Fig. 2, showingstirrup and guides.

Similar letters of reference indicate corresponding parts. I

The object of my invention is to furnish a crosscut sawing-machine whichmaybe worked by one man with great rapidity, saving time and handsthereby. My invention consists of a crosscut-saw which moves in asuitable stirrup, and connects by two curved plates with the rear of acarriage sliding on the supporting-frame. I

A wheel with curved cams or wings is rotated by a hand-crank, and actson elastic rollers of the sliding carriage, producing thereby the rapidreciprocating motion of the sliding carriage and saw.

In the drawing, A represents the supportingframe, to which thecrosscut-saw B is hung by means of stirrup G, sliding by ropes a andpulleys a in upright guide-pieces D. The saw B is brought by two curvedplates or bars, B, which are attached to the end of the saw, in

' connection with the rear part of a sliding carriage, E. The rear endsof bars B are pivoted to the shaft of an elastic roller, 11, turning inbearings 01 at the rear part of carriage E.

Bolts 0 connect rigidly the rear and front parts of the carriage, thefront parts having also a roller, 1), of rubber or other suitablematerial. The carriage E slides on guide-rails f of the longitudinalmain pieces of frame A, reciprocatin g motion being imparted to the sameby a rotary cam-wheel, F, whose shaft turns in bearings g of the sidepieces. The wheel F has threecurved cams or wings, F, as shown in Fig.1, which pass freely between the con nectin g plates B withoutinterfering with them. The cam-wheel F is rotated by a handcrank, F andengages alternately with the convex sides of the wings the front or rearrollerof the carriage, causing thereby the rapid reciprocating motion ofthe same and of the saw.

After adjusting the saw to the object to be cut, one man may with ease,by turning the crank, attend to the crosscutting, and produce thereby(as the machine is easily carried from place to place) a considerablesaving in both hands and time.

Having thus described my invention, I claim as new and desire to secureby'Letters Patent- The crosscut sawing-machine herein described,consisting of the crosscut saw B, supported in frame A, and connected bydouble plates B to sliding carriage E, with elastic front and rearrollers operated by cam-wheel F, all arranged and constructedsubstantially as specified.

WINFIELD S. GERRISH. WVitnesses:

W. R. WiLsoN, M. A. LOFLER.

